Saliva-ejector.



A. B. COSAD.

SALIVA EJECTOR.

APPucATmN FILED 1m31. 1916.

Lz Patented Apr. 10, 1917.

WITNESSES:

INVENTOR MWH Cama.

Arrons l-:Ys

ALBERT B. COSAD, 0F PIEDMONT, CALIFORNIA.

SALIVA-EJ'ECTOR.

Specicaton of Letters Patent.

Patented Apr. 1W, llQll't.

Application filed January 31, 1916. Serial No. 75,279.

To all whom t may concern Be it lrnown that l, ALBERT B. CosAD, a citizen of the United States, residing at Piedmont in the county of Alameda and State of California, have invented new and useful Improvements in Saliva-Ejectors, of which the following is a specification.

This invention relates to dental saliva tubes, and pertains especially to the provision of a sanitary article which may be4 manufactured so cheaply as to be thrown away after one operation.

A special object of the present invention is to provide a sanitary saliva tube which will insure perfect ejection of the saliva from the mouth and comfort to the user, through the medium of the novel construction of the air vents and fluid passages which will prevent the tissues of the mouth being drawn into the perforations in the head of the tube.

Having reference to the accompanying drawings:

Figure 1 is a side elevation of the tube.

Fig. 2 is a detail perspective view.

F ig. 3 is a detail View of the suction head, partly broken away.

Fig. 4t is a cross section on line 44 of Fie'. l.

represents my improved sanitary, seamless ejector tube made of suitable size, shape and material, preferably U-shaped in the usual manner. The U-shaped end is provided with a rounded head 2 which is closed except for the side perforations 3. The opposite end of the tube is adapted for connection with a hose.

The invention resides in the unusual construction of the tube. As here shown, it has a longitudinally extending diaphragm 4, which extends practically from end to end of the tube, dividing the interior thereof into two passageways l5 andV 6; the passage 5 forming the air duct and the passage 6 the liquid duct or saliva drain. The passage 6 is open from end to end, while the passage 5 is closed at the lower end of the tube, except for a small perforation 7 at a point above the hose connection; the two passages 5 and 6 being connected in the head 2 by a small hole 8 in the diaphragm about in line with the perforations 3.

In practice, the tube being connected to a suitable suction apparatus is inserted into the mouth of the patient. The downward suction of the liquid is through the passageway 6; a counter-current of air being induced upwardly through the perforation 7 and passage 5, and thence through the hole 8 into the passageway 6.

These articles may be made very economically and after being used once may be thrown away, thus insuring at all times a sanitary article.

Having thus described my invention, what I claim and desire to secure by Letters Patent is* 1. A saliva ejector comprising a tube with a longitudinal partition dividing the tube into two passageways which connect at the head end of the tube, an injector opening in the head opening into both passageways, one passageway forming a saliva duct and the other passageway closed except for an air vent between the ends of the tube.

2. A saliva ejector comprising a tube with a longitudinal partition dividing the tube into two passageways communicating at the head end of the tube, and an injector opening in the head opening into each passageway, one passageway forming a saliva duct and the other an air duct.

ln testimony whereof l have hereunto set my hand in the presence of two subscribing witnesses.

ALBERT B. COSAD.

Witnesses:

Unas. A. Wmmmr, li. J. GINTYCE.

@epics of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

